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An Improved Data Set for Antarctica: a Filled and Edited 90m-TanDEM-X Digital Elevation Model

Wessel, Birgit and Huber, Martin and Abdullahi, Sahra and Reuß, Felix and Georg, Isabel and Roth, Achim (2019) An Improved Data Set for Antarctica: a Filled and Edited 90m-TanDEM-X Digital Elevation Model. TerraSAR-X / TanDEM-X Science Team Meeting 2019, 21.-24. Okt. 2019, DLR Oberpfaffenhofen, Germany.

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Abstract

In this study we present the digital elevation model (DEM) for Antarctica produced by the TanDEM-X (TerraSAR add-on for digital elevation measurement) mission. It is composed of more than 41,000 interferometric synthetic aperture radar (InSAR) DEM scenes. The DEM presented here is a reduced version of the TanDEM-X global DEM in a 90m universal polar stereographic (UPS) projection. For Antarctica, special adaptations on the nominal TanDEM-X DEM generation were conducted in particular regarding the DEM calibration. Further improvements on the TanDEM-X DEM version 1.0 were conducted, as holes were filled with new acquisitions leading to a significantly reduced amount of invalid areas. Comparisons with ICESat and Icebridge data are performed. As X- Band SAR penetrates the snow and ice pack by several meters a new concept for absolute vertical ground control points was set up that relies on areas with stable penetration conditions and on ICESat (Ice, Cloud, and land Elevation Satellite) elevations. The resulting DEM is outstanding due to its resolution, accuracy and coverage completeness, especially for Antarctica. The 3-arcsecond version (so-called 90m DEM) is freely available. It provides a high resolution dataset as basis for research, e.g. on climate change, in Antarctica.

Item URL in elib:https://elib.dlr.de/129949/
Document Type:Conference or Workshop Item (Speech)
Title:An Improved Data Set for Antarctica: a Filled and Edited 90m-TanDEM-X Digital Elevation Model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wessel, BirgitBirgit.Wessel (at) dlr.dehttps://orcid.org/0000-0002-8673-2485
Huber, MartinMartin.Huber (at) dlr.dehttps://orcid.org/0000-0003-2665-2149
Abdullahi, SahraSahra.Abdullahi (at) dlr.deUNSPECIFIED
Reuß, FelixSLUUNSPECIFIED
Georg, IsabelSLUhttps://orcid.org/0000-0002-6842-4606
Roth, AchimAchim.Roth (at) dlr.deUNSPECIFIED
Date:2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:TanDEM-X, DEM Antarctica, editing
Event Title:TerraSAR-X / TanDEM-X Science Team Meeting 2019
Event Location:DLR Oberpfaffenhofen, Germany
Event Type:international Conference
Event Dates:21.-24. Okt. 2019
Organizer:DLR Oberpfaffenhofen
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - TSX/TDS Payload ground segment
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface Dynamics
Deposited By: Wessel, Dr.-Ing. Birgit
Deposited On:05 Nov 2019 12:03
Last Modified:05 Nov 2019 12:03

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